renderData method

@override void renderData(Canvas canvas, ChartTransform transform, BetweenLineData betweenData)

Implementation

@override
void renderData(
  Canvas canvas,
  ChartTransform transform,
  BetweenLineData betweenData,
) {
  final paint = Paint();

  final from = betweenData.from;
  final to = betweenData.to;

  if (!from.lineType.drawLine || !to.lineType.drawLine) {
    return;
  }

  if (from.line.length < from.lineType.minPoints || to.line.length < to.lineType.minPoints) {
    return;
  }

  final combinedPath = from.lineType.renderer.toPath(from.lineType, from.line);
  betweenData.to.lineType.renderer.toPath(to.lineType, to.line, reverse: true, path: combinedPath);
  combinedPath
    ..fillType = betweenData.areaFillType ?? PathFillType.evenOdd
    ..close();

  final tPath = transform.path(combinedPath);

  if (betweenData.areaGradient != null) {
    paint.shader = betweenData.areaGradient!.createShader(tPath.getBounds());
  } else {
    paint.shader = null;
    paint.color = betweenData.areaColor;
  }

  paint.style = PaintingStyle.fill;

  canvas.drawPath(tPath, paint);
}